Window latch



a m. 6 7 r \/W.. 13" 32315 W @i g WW Dec. 27, 1932. w. QUICK ET AL WINDOW LATCH Filed Oct. 3, 1928 Patented Dec. 27, 1932 UNITED STATES PATENT OFFICE WILLIAM QUICK, OF LONDON, SYDNEY EDWARD THOMAS, 015 HOUNSLOW, AND

FREDERIGK WILLIAM BERWIGK, or Lo noN, E GLAND i wINnow LA'rcir Application filed October 3, 1928, Serial No. 310,080, and in Great Britain November 17, 1927.

This invention relates to devices for latching or retaining windows, and particularly vehicle windows, in any desired position of adj ustment.

According to the present, invention, a slidable window construction is provided with adjustable cam elements, mounted between the edge or edges of a window, and guides in which the window is slidable, and with means for causing such cam elements automatically or at will to make frictional engagement with the guides for the purpose of securing the window in any desired position of adjustment.

According to the invention, a moveable cam or cams carried by a window is or are urged by resilient means into frictional securing or latching engagement with the guides, means being provided to render the cams inoperative at will.

Reference will now be made to the accompanying drawing, which illustrates by way of example a construction according to the invention, and in which,

Figure 1 is a part elevation of a window provided with adjustable cams.

Figure 2 is a sectional end elevation of the arrangement shown in Figure 1.

In the form illustrated in Figures 1 and 2 a vertically slidable window is adapted to slide in channel shaped guides 1, whilst to each of the vertical edges of the window 2 are fixed blocks 3 which project into the guides 1 and constitute means for actuating 5 cam roller latch elements 4 which make frictional engagement with the inner walls of the channel shaped guides for the purpose of securing the window in any desired position of adjustment. The position of the cam or latch 4 is controlled in the following manner.

Through bearings 5 carried at the edge of the window extends a rod 6 the lower end of which abuts against a slide 7 having slots 8 through which pass studs 9 on the block 3. The cam latch 4 projects through a third slot 10 in the slide 7 and the cam latch 4 is formed or provided with a tail piece 11 which is engaged in a V-shaped recess 12 in the block 3. Below the slide 7 is disposed a pin 18 for limiting the movement of the slide, said pin being surrounded by a coiled spring 14 for cushioning the movement of the slide and for normally mamtaining it in a position in which the cam or latch 4 engages the wall of the guide 1. A secondspring 15 fulfilling a function similar to that of the spring 14 is disposed between the uppermost bearing 5 and a nut 16 on the rod 6. The upper end of this rod has an arm 17, extending therefrom at a right angle thereto, which engages beneatl -1 the semi-circular shaped end 18 of an operating rod 19 which extends through a hollow metallic heading or housing 20 which encloses the upper edge of the window. This housing is slotted at its mid portion at 21 to accommodate an operating lever 22 attached to the centre of the rod 19.

The operation of the mechanism above described is as follows The cam roller or latch 4 is normally pressed into frictional securing engagement with the wall of the channel shaped guide 1 by the actionof the springs 14 and 15 and when it is desired to raise or lower the window the operating lever 22 is rocked, causing the end 18 of the rod 19 to assume one orother of the positions indicated in broken lines in Fig. 2.

This operation causes the rod :6 to be dejusted to any desired position so long as the operating lever 22 is held in one or other of its extreme positions. Immediately the operating lever is released, the springs 14 and 15 become operative, and restore the parts to normal position, the slide 7 moving the cam I roller 4 upwards until its tail piece 11 is reengaged by the converging walls of recess 12 to force the cam roller to engage the wall of the guide and secure or latch the window against movement.

In practice, and as applied to automobile vehicle windows it is preferred to employ two cams at each side of the window, and to use the invention in conjunction with a spring balanced arrangementwhich cushions downward movement of the Window and assists the upward movement.

We claim:

1. In combination with a member to be latched, a guideway in which said member is slidable, a block carried by said member and having a substantially V-shaped recess directed toward said guideway, a slide longitudinally shittable between said block and said guideway and having an aperture normally positioned opposite said recess, a latching member mounted in said aperture and normally engaging said guideway, said latching member having a nose normally positioned in the apex of said recess, a rocksha-ft extending transversely of the member to be latched, and means operable by rocking said roclrshaft in either direction from shifting said slide relatively to said block and releasing said latching member.

2. An apparatus according to claim 1 including yieldable means normally maintaining the slide in position with the nose of the latching member in the apex of the recess of the block and wherein the means operable by the rockshaft for releasing the latching member comprises a cam carried by the rockshaft and a longitudinally shiftable rod between said cam and the slide.

3. In combination with a guideway member a closure member slidable in said guideway member latching means carried by one of said members and adapted to frictionally engage 01 e other member and secure said closure member against movement, means normally urging said latching means into engaging position and means for releasing said latchingmeans, said last-named means including a shaft mounted to rock on an axis parallel to said slidable closure and a cam carried by said shaft and operable by the rocking movement of said shaft in either direction.

In witness whereof we afiix our signatures WILLIAM QUICK.

SYDNEY EDWARD THOMAS. FREDERICK WILLIAM BERWICK. 

